NTSB Identification: SEA92FA109.
The docket is stored on NTSB microfiche number 46478.
Accident occurred Sunday, May 24, 1992 in COLBURN, ID
Probable Cause Approval Date: 09/29/1993
Aircraft: CESSNA 172L, registration: N3988Q
Injuries: 1 Fatal,2 Serious.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE PILOT BECAME DISORIENTED AND INADVERTENTLY ENTERED A BOX CANYON IN MOUNTAINOUS TERRAIN. HE ATTEMPTED TO REVERSE COURSE AT THE TOP OF THE NARROW CANYON AT A LOW ALTITUDE AND SLOW AIRSPEED, AND THE AIRCRAFT STALLED. THE AIRCRAFT IMPACTED ON THE SIDE OF A MOUNTAIN IN A NOSE DOWN ATTITUDE AT 4400 FT MSL.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: THE PILOT BECAME LOST/DISORIENTED, FAILED TO MAINTAIN AIRSPEED WHEN HE ATTEMPTED TO REVERSE COURSE IN A BOX CANYON, AND THE AIRCRAFT STALLED. FACTORS RELATING TO THE ACCIDENT WERE THE NARROW BOX CANYON, THE HIGH DENSITY ALTITUDE, AND THE LACK OF MOUNTAIN FLYING EXPERIENCE BY THE PIC.
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